Rotational Motion-Moment of Inertia (NEET Physics): Questions 13 - 15 of 34

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Question number: 13

» Rotational Motion » Moment of Inertia

Assertion-Reason▾

Assertion (Ꭺ)

Moment of inertia of a particle is same, whatever be the axis of rotation.

Reason (Ꭱ)

Moment of inertia depends on mass and perpendicular distance of the particle from its axis of rotation.

Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are false

b.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

c.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

d.

Ꭺ is false but Ꭱ is true

Question number: 14

» Rotational Motion » Moment of Inertia

MCQ▾

Question

ABC is a triangular plate of uniform thickness. The sides are in the ratio shown in the figure. I AB, I BC, I CA are the moments of inertia of the plate about AB, BC, CA respectively. For this arrangement which one of the following relation is correct?

Uniform triangular plate ABC with uniform thickness

Uniform Triangular Plate ABC With Uniform Thickness

In above figure we show that ABC is a triangular plate of uniform thickness.

Choices

Choice (4) Response

a.

I CA is maximum

b.

IBA>IAB

c.

IBC>IAB

d.

IAB+IBC=ICA

Question number: 15

» Rotational Motion » Moment of Inertia

MCQ▾

Question

One quarter section is cut from a uniform circular disc of radius R. This section has mass M. It is made to rotate about a line perpendicular to its plane and passing through the centre of the original disc. Its moment of inertia about the axis of rotation is

Quarter section - cut from a uniform circular disc of radius R

Quarter Section - Cut From a Uniform Circular Disc of Radius R

In figure one quarter sector is cut from a uniform circular disc of radius R and mass M

Choices

Choice (4) Response

a.

12mr2

b.

14mr2

c.

18mr2

d.

2mr2

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